scope:

This standard covers the functional requirements and technical specification for all earthing pantographs to be used on the 25 kV a.c. overhead contact system.

This standard is applicable to all designers and manufacturers of earthing pantographs.

The process and controls for the use of an earthing pantograph is excluded from the scope of this standard.

Purpose

This standard defines the requirement for the production, design and testing of an earthing pantograph fitted to rail mounted plant or machinery. The earthing pantograph mitigates the risk of electric shock by providing an earth on the 25 kV a.c. overhead contact system as part of an implementation of an isolation in line with Network Rail's electrical safety principles and isolation processes.